 /*******************************************************************************
  * Copyright (c) 2000, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.test.internal.performance;

 import java.util.HashSet ;
 import java.util.Set ;

 import org.eclipse.test.performance.Performance;
 import org.eclipse.test.performance.PerformanceMeter;

 import junit.framework.TestCase;

 public abstract class PerformanceMeterFactory {
     
     private static Set fScenarios= new HashSet ();
     
     public PerformanceMeter createPerformanceMeter(String scenario) {
         assertUniqueScenario(scenario);
         return doCreatePerformanceMeter(scenario);
     }

     public PerformanceMeter createPerformanceMeter(TestCase testCase, String monitorId) {
         return createPerformanceMeter(Performance.getDefault().getDefaultScenarioId(testCase, monitorId));
     }

     public PerformanceMeter createPerformanceMeter(TestCase testCase) {
         return createPerformanceMeter(Performance.getDefault().getDefaultScenarioId(testCase));
     }

     protected abstract PerformanceMeter doCreatePerformanceMeter(String scenario);
     
     private static void assertUniqueScenario(String scenario) {
         if (fScenarios.contains(scenario))
             throw new IllegalArgumentException ();
         fScenarios.add(scenario);
     }
 }

